//
//  UIButton+ExpandButton.m
//  bliss
//
//  Created by mac on 2023/8/3.
//

#import "UIButton+ExpandButton.h"
#import <objc/runtime.h>

static const NSString *KEY_ButtonId = @"buttonId";
static const NSString *KEY_ButtonBlock = @"buttonBlock";
static const NSString *KEY_HitTestEdgeInsets = @"hitTestEdgeInsets";

@implementation UIButton (ExpandButton)

//添加点击事件-
-(void)addClickBlock:(ButtonBlock)block
{
    
    self.block = block;
    [self addTarget:self action:@selector(buttonAction:) forControlEvents:UIControlEventTouchUpInside];
}

-(void)buttonAction:(UIButton *)button
{
    self.block(button);
}

- (void)layoutButtonWithEdgeInsetsStyle:(XDButtonEdgeInsetsStyle)style
                        imageTitleSpace:(CGFloat)space
{
    
    // 1. 得到imageView和titleLabel的宽、高
    CGFloat imageWith = self.imageView.frame.size.width;
    CGFloat imageHeight = self.imageView.frame.size.height;
    
    CGFloat labelWidth = 0.0;
    CGFloat labelHeight = 0.0;
    if ([UIDevice currentDevice].systemVersion.floatValue >= 8.0) {
        // 由于iOS8中titleLabel的size为0，用下面的这种设置
        labelWidth = self.titleLabel.intrinsicContentSize.width;
        labelHeight = self.titleLabel.intrinsicContentSize.height;
    } else {
        labelWidth = self.titleLabel.frame.size.width;
        labelHeight = self.titleLabel.frame.size.height;
    }
    
    // 2. 声明全局的imageEdgeInsets和labelEdgeInsets
    UIEdgeInsets imageEdgeInsets = UIEdgeInsetsZero;
    UIEdgeInsets labelEdgeInsets = UIEdgeInsetsZero;
    
    // 3. 根据style和space得到imageEdgeInsets和labelEdgeInsets的值
    switch (style) {
        case XDButtonEdgeInsetsStyleTop:
        {
            imageEdgeInsets = UIEdgeInsetsMake(-labelHeight-space/2.0, 0, 0, -labelWidth);
            labelEdgeInsets = UIEdgeInsetsMake(0, -imageWith, -imageHeight-space/2.0, 0);
        }
            break;
        case XDButtonEdgeInsetsStyleLeft:
        {
            imageEdgeInsets = UIEdgeInsetsMake(0, -space/2.0, 0, space/2.0);
            labelEdgeInsets = UIEdgeInsetsMake(0, space/2.0, 0, -space/2.0);
        }
            break;
        case XDButtonEdgeInsetsStyleBottom:
        {
            imageEdgeInsets = UIEdgeInsetsMake(0, 0, -labelHeight-space/2.0, -labelWidth);
            labelEdgeInsets = UIEdgeInsetsMake(-imageHeight-space/2.0, -imageWith, 0, 0);
        }
            break;
        case XDButtonEdgeInsetsStyleRight:
        {
            imageEdgeInsets = UIEdgeInsetsMake(0, labelWidth+space/2.0, 0, -labelWidth-space/2.0);
            labelEdgeInsets = UIEdgeInsetsMake(0, -imageWith-space/2.0, 0, imageWith+space/2.0);
        }
            break;
        default:
            break;
    }
    
    // 4. 赋值
    self.titleEdgeInsets = labelEdgeInsets;
    self.imageEdgeInsets = imageEdgeInsets;
}

-(void)setBlock:(ButtonBlock)block{
    objc_setAssociatedObject(self, &KEY_ButtonBlock, block, OBJC_ASSOCIATION_RETAIN);
}

-(ButtonBlock)block{
    return objc_getAssociatedObject(self, &KEY_ButtonBlock);
}

@end
